Is the monitor button on the 765 supposed to shut off the sidetone when it's out (disengaged)? I just started using one and it doesn't. Thanks, Matt--K7BG --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.394 / Virus Database: 224 - Release Date: 10/03/2002